When doing contract negotiations, some of the phone conferences I'll be in will last 5 hours easily.
Allowances are made for people to change batteries, find chargers or laptops to connect to - whatever it takes. Bluetooth doesn't last that long, and being chained to a desk doesn't cut it. You wire up, you walk around, you get coffee, you fetch files, and you go on mute or mute/speaker while the other parties grind their axes.
And we all accommodate each other, and compliment one another that a battery lasted as long as did.
I'm little more impressed with the Android battery integration than I am with the iPhone's. I had a Helio Ocean feature phone - it's battery formed a part of the back case. None of this take off the back cover nonsense.
So, in my opinion sports fans, until someone brings that level of convenience back, _all_ of us with high phone use demands are getting screwed.
(And I learned of the ability to change iPhone batteries from my colleagues, who had that need.)